John f



(No Model.)

J. 1?. PHASE.

STEAM HEATER.

N0. 308,039.v Patented Nov. 11, 1884.

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JOHN F. PEASE, or SYRACUSE, NEW YORK, ASSIGNOR TO THE JOHN F. PEASEFURNACE COMPANY, or SAME PLACE.

STEAM-HEATER.

SPECIFICATION forming part of Letters Patent No, 308,039, dated November11, 1884.

Application filed January 24, 18%. (No model.) i

tate the return of the water of condensation to the water-space of theboiler; and to that end my invention consists in the construction andcombination of parts, hereinafter described, and specifically set forthin the claim.

In the annexed drawings, Figure 1 is a vertical section of a heatingapparatus embodying my invention, taken on line a: x in Fig. 2, and Fig.2 is a horizontal section on line 3 y, Fig. 1.

Similar letters of reference indicate corresponding parts.

A denotes the fire-box, uponwhich is erected a combustion-chamber, D,which communicates at its upper end with a radiator, R, surrounding thecombustion-chamber, as shown in Fig. 2 of the drawings. The products ofcombustion pass from the combustion-chamber D through pipes G into theradiator R, and thence escape through the exit-flue E connected with thesaid radiator. A direct exit-flue, F, is connected with the upper partof the combustion-chamber and provided with a damperto increase thedraft through the firebox, when required.

The described fire-box, combustion-chamher, and radiator are inclosed ina casing, O, which admits air at its base, said air becoming heated inits ascent to the top of the easing, from whence it is conducted bypipes l? P to the apartments of the building to be heated.

The aforesaid apparatus constitutes a hotair furnace for which I havealready obtained United States Letters Patent, dated July 10, 1877. Withsaid hot-air furnace I have combined a steam-heating apparatusconsisting of a tubular upright boiler, B, supported inside of thecombustion-chamber in such a manner as to cause theproducts ofcombustion to circulate around it as well as through it, for whicharrangement I have also obtained Letters Patent of the United States,November 1, 1881. A pipe, a, extended from the top of the boiler conveysthe steam to radiators in the apart ments of the building to be heated,and another pipe, 0, conducts the water of condensation from theradiators back to the boiler.

It is to promote the flow of the water of condensation to the waterspaceof the boiler which my present invention has for its object, and toaccomplish this I extend the return water-pipe 0 into the fire-box A insuch a position as to cause it to be impinged by the fire, and thence Iextend it vertically to the bottom of the boiler B,which it taps at ornear its center, as illustrated in Fig. 1 of the draw ings. The bottomI) of the boiler I incline from the fire-door H toward the opposite sideof the firebox, so as to counteract the tendency of the fire in theaforesaid direction, and thus better distribute the circulation of theproducts of combustion around and through theboiler B. The lowestpointof the inclined bottom I) of the boiler I tap by an auxiliary pipe, (I,which extends out of the combustionchamber above the fire-box and outthrough the casing O, at the outside of which latter I connect saidauxiliary pipe with the water-induction pipe 0, before described.

It will be observed that by the aforesaid arrangement of the auxiliarypipe (1 the .waterinduction pipe communicates with the waterspace of theboiler at two points at relatively different elevations. The pipe 0,tapping the boiler at the higher point and being extended through thefire-box, is. subjected to intense heat, and the water in said pipe isthus rapidly expanded and driven up into the boiler, while the pipe cl,tapping the boiler at its lowest point, draws therefrom the coolestwater, which rushes to the pipe 0 and toward the aforesaid heatedportion thereof, to follow the current produced by the displacement ofthe water in said pipe incident to the heat received from the firesurrounding it.

The described circulation of water produces suction in the main portionof the pipe 0, which is extended to the radiator, and this suctionpromotes the flow of the water of condensation from the radiator to theWaterspace of the boiler.

, The aforesaid circulation of water from the boiler through the pipes d0 back to the boiler also tends to cleanse the boiler, the sedimentsbeing constantly drawn off through the pipe (I and into the pipe 0, fromwhence they can be removed by opening a blow-off cock, 6, connected to abranch of the said pipe, as illustrated in Fig. 1 of the drawings.

Having described my improvements, what I claim is- In combination withthe fire-box A, the boiler B, provided with the inclined bottom I), andwith the steam-pipe a, the return waterof two attesting witnesses, atSyracuse, in the county of Onondaga, in the State of New York, this 17thday of January, 1884.

JOHN F. PEASE. [L. s.] W'itnesses;

FREDERICK H. GIBBs, WILLIAM G. RAYMOND.

